Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
van hanh » van thanh, ban hanh, van anh
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
van cac » van hac, van cau, van bac
cac xuc » cam xuc, cac nuoc, chat xuc
xuc van » duc van, luc van, xuc ban
cua tre » cuu tre, cua triet, dua tren
cua tec » cua tuc, cua toc, cua viec
tu san » thu san, tu ban, tu can
san ky » sang ky, van ky, dan ky
cua te » cua tu

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu san ky tang xa hoi. hieu van cac xuc van hanh vi ((cua tre) or (((cua te) or (cua tec))))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu san ky tang xa hoi. hieu van cac xuc van hanh vi ((cua tre) OR (((cua te) OR (cua tec)))).
• Adding a wildcard symbol may retrieve word variants: tu san ky tang xa hoi. hieu van cac xuc van hanh vi ((cua tre) or (((cua te) or (cua tec))))*.